Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAMNikon D3100
Top 8%2,287 points
Top 8%
Top 41%1,466 points
Top 41%
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
vs
Top specs and features

Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM vs Nikon D3100: 73 facts in comparison

1. megapixels

9.46% more megapixels (main camera).
16.2MP
Panono Camera: 108MP
14.8MP

2. sensor size

The larger the sensor the more light the sensor captures yielding in better image quality.
23.5 x 15.6mm
Polaroid Snap: 81.2 x 25.4mm
23.1 x 15.4mm

3. focus points

The more focus points the more flexibility in picking which part of the scene to focus on. They also give the image sensor a better probability in identifying the right area of the scene to focus on in more automatic modes.
15
Sony Alpha a7 III: 693
11

4. continuous shooting at high resolution

Fast continuous shooting is useful for catching action shots.
10fps
Olympus OM-D E-M1 Mark II: 60fps
3fps

5. has a flip-out screen

Flip-out screens are useful for doing tricky shots.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
27% have it

6. maximum light sensitivity

With a higher light sensitivity (ISO level), the sensor absorbs more light. This can be used to capture moving objects using a fast shutter speed, or to take images in low light without using a flash.
12800 ISO
Nikon D7500 + Nikon AF-S DX Nikkor 18-140mm f/3.5-5.6G ED VR: 1640000 ISO
12800 ISO

7. image quality

A device's overall image quality score considers: color depth, dynamic range and low light performance. Source: DxOMark.
73
Sony Alpha 7R II: 98
67

8. longer battery life

CIPA is an independent, standard measurement that determines how many shots a camera can take before the battery dies.
330shots
Nikon D3x: 4400shots
550shots

9. video recording (main camera)

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
1080 x 60fps
Canon EOS 1D X Mark II: 2160 x 60fps
1080 x 24fps

10. weight

37g lighter.
492g
HTC Re: 65.5g
455g

11. Has WiFi

The device can connect to WiFi.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
37% have it

12. color depth

The better a device's color depth the more color nuances it can distinguish. Source: DxOMark.
23bits
HP Photosmart R927: 42bits
22.5bits

13. fastest shutter speed

A faster maximum shutter speed allows taking pictures of fast moving subjects without blur.
1/4000s
Sony Cyber-shot DSC-RX100 IV: 1/32000s
1/4000s

14. Has phase detection autofocus for videos

A phase detection autofocus system is faster than a contrast detection autofocus system. Even when recording scenes with a lot of fast movements, the videos are sharp and clear.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
11% have it

15. has a stereo microphone

A stereo microphone allows to record audio files or movies in stereo without an external microphone.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
50% have it

16. Has phase detection autofocus for photos

A phase detection autofocus is much faster than a contrast detection autofocus, allowing for sharper images.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
31% have it

17. dynamic range

The better the dynamic range the system captures a wider number of values from dark to light leading to more details in low and highlights. Source: DxOMark.
12.4Evs
Nikon D810A: 14.8Evs
11.3Evs

18. has built-in optical image stabilization

Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
46% have it

19. resolution

4x higher resolution.
1176 x 784px
Panasonic Lumix DC-GH5S: 3680 x 2760px
588 x 392px

20. has a built-in HDR mode

It can automatically shoot pictures with a higher dynamic range (HDR).
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
26% have it

21. has AF tracking

With AF tracking, once you choose the subject and press the shutter release part way down, as the subject moves, the autofocus will follow it. No more out of focus shots.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
72% have it

22. has a microphone in

A microphone port allows connecting external high-end or specialized microphones.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
25% have it

23. has a 24p cinema mode

24p is a video format (24 frames per second) traditionally used in cinema. Nowadays, it is used to create film-like motion characteristics.
Sony SLT-A55 + Sony DT 18-55mm/ F3.5-5.6 SAM
Nikon D3100
26% have it

24. battery power

8% more battery power.
1080mAh
Samsung Galaxy NX Mirrorless + 18-55mm f/3.5-5.6: 4360mAh
1000mAh

25. width

32.46mm narrower.
92mm
DxO One: 26.2mm
124.46mm

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